Quick Installation Method of Static Level Monitoring in Existing Railways or Railway Stations

Abstract

The present invention belongs to the technical field of static level monitoring, and in particular relates to a rapid installation method of static level monitoring in existing railways or railway stations, including the following steps: S1, design investigation. Before prefabrication, it is necessary to conduct field investigation and design on the measuring point positions and line orientations of multiple monitoring sections at the site; S2, material preparation. Prepare the materials and tools necessary for the prefabrication and assembly of the monitoring section; S3, prefabrication and assembly of sensors. Use an open and enclosed section to simulate, drill, and prefabricate and assemble the sensors and pipelines of the monitoring section; S4, sensor transportation. After step S3, wind the sensors at the end of the prefabricated section onto the transportation bracket; S5, on-site installation of sensors. Multiple people cooperate to open the prefabricated sensor wire reel starting from the reference point. The advantages are as follows: The present invention pre-assembles, prefabricates, and adjusts the monitoring sensor section outside the railway scope in advance, determines the approximate installation time, thereby greatly improving the utilization efficiency of the skylight point and reducing the on-site installation and debugging time.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrostatic level monitoring, and particularly relates to a rapid installation method of hydrostatic level monitoring in existing railways or railway stations. Background Technique

[0002] Hydrostatic level monitoring is highly recognized by colleagues in the monitoring industry due to its reliable monitoring accuracy, stability, and wide adaptability. The installation and commissioning of hydrostatic levels in a conventional on-site environment take a long time and occupy a large area. When used in existing operating railway lines or railway stations, there are many railway equipment management units. To ensure the safety of railway operation and installation personnel, the safety management within the railway line range is extremely strict. When applying hydrostatic level equipment within the operating railway range, it is necessary to apply for railway skylight time. Therefore, when using hydrostatic level monitoring equipment within the railway line range, it is necessary to communicate and coordinate with relevant railway departments in advance and use the railway skylight points for measuring point installation and commissioning. The skylight time is divided according to the line level. Generally, the skylight duration is about 120 minutes. Excluding the time for entering the site, installation, commissioning, and clearing the site, the actual effective working time is even less.

[0003] Therefore, we propose a rapid installation method of hydrostatic level monitoring in existing railways or railway stations to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid installation method of hydrostatic level monitoring in existing railways or railway stations that can improve the utilization efficiency of skylight points for the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A rapid installation method of hydrostatic level monitoring in existing railways or railway stations, including the following steps:

[0006] S1. Design investigation. Before prefabrication, preferably conduct field investigation and design on the measuring point positions and line orientations of multiple monitoring sections on-site, determine the installation positions, heights, and specific line arrangements of hydrostatic level instruments, liquid storage tanks, and data acquisition instruments, and make corresponding position marks;

[0007] S2. Material preparation. Prepare the necessary materials and tools for the assembly and prefabrication of the monitoring section, and transport them to the vicinity of the corresponding positions. Insulation and collision protection measures are adopted for on-site instruments and pipelines;

[0008] S3, sensor prefabrication and assembly. Use open and closed sections to simulate, drill and prefabricate the monitoring section sensors and pipelines. Cut the liquid pipe, ventilation pipe and four-core cable between the static level sensors and keep them ready for use. Take the prefabricated section reference point as the head end and the last sensor as the tail end. Starting from the sensor at the tail end of the monitoring section, seal the liquid and ventilation joints at one end with a head, and connect the other end to the liquid pipe and ventilation pipe respectively and tighten them with nuts. Connect the four-core cable, and repeat the above operations to connect all the monitoring sensors of the monitoring section.

[0009] S4, sensor transportation; after step S3, the sensor at the tail end of the prefabricated section is wound onto the transport bracket to fix each sensor. During the process, the prefabricated section should be kept in a relaxed state to avoid pulling the assembled pipe and sensor;

[0010] S5, on-site installation of sensors; multiple people cooperate to open the prefabricated sensor reel from the reference point, and start to place it along the reference point of the layout section until the last sensor is installed. During the process, avoid pulling the assembled pipes and sensors. The on-site installation is divided into 2 sensor installation groups, one acquisition equipment installation group, and one mobile group. The 2 installation groups move forward alternately until the reference point sensor is installed. Check on-site whether the page in the sensor is normal, check the measurement data to confirm that it is correct, and after all the data are confirmed, arrange 2 groups to check the sensors one by one at the same time to see if they are tightly closed and whether the bridge cover is firmly fixed, so that the monitoring section sensors and pipelines are all tightly protected.

[0011] In the above-mentioned method for rapid installation of static level monitoring in an existing railway or railway station, in the step S3, the liquid pipe, the air pipe, and the four-core cable between the static level sensors are slightly longer than the predetermined spacing on site.

[0012] In the above-mentioned method for rapid installation of static level monitoring in an existing railway or railway station, in the step S3, the spacing between the prefabricated section sensors is no more than 20m.

[0013] In the above-mentioned method for rapid installation of static level monitoring in an existing railway or railway station, in the step S3, the reference point sensor is connected to the sensor at the head end of the monitoring section with a liquid and air pipe and cable of no less than 40 meters to meet the requirement that the reference point is installed outside the area affected by the shield construction. The other end of the reference point sensor is connected to the liquid and air pipe and cable; the liquid and air pipes are respectively connected to the water tank interface 50 cm above the ground, and the cable is connected to the corresponding interface of the collection box.

[0014] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S3, add antifreeze into the water tank. After the antifreeze fills all the pipes and sensors, check each sensor and its joints one by one for any leakage. If leakage occurs, raise and reconnect in time to ensure that there is no leakage at the joints. After standing for a period of time, observe whether the liquid level in the water tank always remains above the middle liquid level line. When it is too low, inject antifreeze in time to above the water tank liquid level line, and immediately check for leakage points. Repeatedly check and repair until the leakage points are eliminated. Then check each section of the water pipe for air bubbles one by one, and introduce the air bubbles into the sensors. Open the pressure relief valve to remove the air bubbles.

[0015] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S3, start from the sensor at the end of the section with thermal insulation materials to wrap the liquid pipe, gas pipe and four-core cable together, and use aluminum foil fiberglass cloth tape to wind and fix the thermal insulation materials so that the thermal insulation materials tightly wrap the pipes and cables. Wrap them one by one like this to the reference point sensor. During the wrapping process, keep the prefabricated monitoring section always in on-line measurement.

[0016] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S3, after wrapping is completed, turn off and remove the power supply battery, tie up and straighten the power supply cable and put it into the acquisition box for reuse during on-site installation. Remove the water pipe and always keep it higher than the water tank height to ensure that the liquid level in the pipe is at the pipe orifice position. Finally, seal the exhaust pipe and cable head.

[0017] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S4, the prefabricated section sensors are successively placed on the shelf up to the reference point sensor. Use magic self-adhesive tape to fix the bracket and the sensor section into three equal parts for convenient transportation, so that the bracket and the prefabricated section remain stable.

[0018] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S5, after checking the sensors, use thermal insulation materials to wrap the sensors.

[0019] In the above-mentioned rapid installation method of static level monitoring in existing railways or railway stations, in step S5, after installation, connect the liquid pipe, gas pipe and cable to the acquisition box correspondingly. When the liquid pipe is opened, always keep it higher than the water tank height, and check the height of the water pipe. Cut off the redundant or air-containing part and connect it to the water tank. The liquid level in the water tank is slightly higher than the middle position, more than 70% of the box body.

[0020] Compared with the existing technology, the advantages of this rapid installation method of static level monitoring in existing railways or railway stations are as follows:

[0021] When the static level is applied quickly and with reduced skylight time within the railway scope, by prefabricating in advance or ordering prefabricated parts, all work processes except on-site installation and fixation are completed in advance outside the railway protection area. Through repeated simulation and deduction, error-prone points are found, and the time required for each node and corresponding measures are calculated to reduce the installation time within the railway and the cooperation cost of the railway management department. At the same time, through prefabrication and assembly, pre-commissioning, and simulation and deduction, the opportunity for trial and error is placed outside the railway protection area, and all possible problems in on-site installation are rehearsed, greatly improving the utilization efficiency of the on-site skylight time, reducing the on-site installation and commissioning time. The reduction of the on-site installation and commissioning time also reduces the possible safety accidents on-site. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the prefabricated sensor connection and assembly of the static level monitoring section of the rapid installation method of static level monitoring provided by the present invention within an existing railway or railway station;

[0023] Figure 2 It is a schematic diagram of the prefabricated assembly protection measures of the static level monitoring section of the rapid installation method of static level monitoring provided by the present invention within an existing railway or railway station;

[0024] Figure 3 It is a sectional view of the protection measures of the prefabricated section of the static level monitoring of the rapid installation method of static level monitoring provided by the present invention within an existing railway or railway station;

[0025] Figure 4 It is a schematic diagram of the static level sensor fixing bracket of the rapid installation method of static level monitoring provided by the present invention within an existing railway or railway station;

[0026] Figure 5 It is a schematic diagram of the stainless steel static level transport rack of the rapid installation method of static level monitoring provided by the present invention within an existing railway or railway station. Detailed Embodiments

[0027] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0028] Embodiment

[0029] Static level monitoring is widely recognized by colleagues in the monitoring industry for its reliable monitoring accuracy, stability and wide adaptability. Static leveling takes a long time to install and debug in conventional on-site environments and occupies a large area. When used on existing operating railway lines or railway stations, there are many railway equipment management units. In order to ensure the safety of railway operation and installation personnel, the safety management of entering the railway line is extremely strict. To apply static leveling equipment within the operating railway, it is necessary to apply for railway window time. Therefore, when using static leveling monitoring equipment within the railway line, it is necessary to communicate and coordinate with the relevant railway departments in advance and use the railway window points for installation and debugging of measuring points. The window time is divided according to the line level. Generally, the window time is about 120 minutes. Except for the time of entering the site, installation, debugging, and clearing the site, the actual effective working time is less. Therefore, if Figures 1-5 As shown in the figure, this scheme designs a method for rapid installation of static level monitoring in existing railways or railway stations, which specifically includes:

[0030] Monitoring assembly prefabrication, transportation and installation material preparation: Before the monitoring section is prefabricated, the location of the measuring points and the line direction of each monitoring section on site are first investigated and designed in the field. First, the site is surveyed, photos are taken to record the image data, and finally the design drawings are edited. According to the on-site investigation, tools and materials are prepared. According to the actual situation on site, the installation position, height and specific line layout of each static level, liquid storage tank and data acquisition instrument are determined, and the position is marked. The materials and tools necessary for the prefabrication of the monitoring section assembly are prepared, as well as the distance between the observation point and the working base point of the monitoring section, the liquid pipe, ventilation pipe, four-core cable (power "+", power "-", signal "A", signal "B"), high-density insulation material, aluminum foil fiberglass cloth tape, collection box (collection module, DTU network equipment, power supply system) and screwdriver, utility knife, hex wrench, wire stripper, etc. On-site installation tools and materials: 2 rechargeable impact drills, 2 rechargeable pistol drills, protective bridge, sensor installation steel plate "L" bracket, as shown below: Figure 4 As shown; also prepare the sensor bracket installation expansion bolts, sensor and bracket fixing bolts, bridge frame fixing expansion tubes and screws, etc.

[0031] Transport bracket: 2 rectangular stainless steel bars (sturdy and easy to hold) are used. The center is drilled and fixed with bolts. A stopper is set on the inside of the handrails at both ends to prevent the prefabricated section from slipping and causing chaos during transportation. In order to make the bracket strong and convenient to use, a quarter of the center of the bracket is opened and connected with a steel bar with holes and fixed with bolts for easy assembly and disassembly. The bracket can be opened and folded freely, and it is opened in a "+" shape. Figure 5As shown, after the prefabrication is completed, the system is debugged. The DTU is installed in the collection box, the external power supply is connected, and the monitoring platform is logged in to set the number, position and other parameters of the monitoring section sensor. Each instrument is powered on for testing and inspection, and the real-time data of the sensor is read. Then, the overall debugging of the hardware and software system is carried out. After the on-site installation, the average value of multiple stable values ​​is measured as the initial data to ensure the accuracy of the original data. The on-site instruments and pipelines are protected by insulation and collision protection measures: each instrument is first wrapped tightly with high-density insulation materials, and then wrapped and tightened with aluminum foil glass fiber cloth reflective tape. After the installation is completed, the communication lines (liquid pipes, gas pipes, and communication lines) are placed in the protection bridge. The protection bridge is fixed on the bottom side of the platform along the ballast height, slightly higher than the surface ballast surface. The monitoring equipment and protection devices do not invade the train limit and do not affect the roadbed safety. The removal of the monitoring equipment: After the monitoring task is completed, the monitoring equipment and its accessories are removed one by one, and the site is restored to the state before construction.

[0032] like Figures 1-2 As shown, sensor prefabrication: check the materials against the size on the drawing. Simulation drills are used to improve installation proficiency and check whether the installation materials and tools are neat. The existing static leveling applications all adopt on-site position determination - leveling - sensor installation - connecting liquid pipes and cables - filling antifreeze - exhausting bubbles - static and exhausting bubbles - protective materials - fixing protective materials - debugging - testing. According to the special circumstances of railway safety management, this method will prefabricate and assemble the work other than sensor installation and fixation outside the railway in advance. After the prefabrication and assembly are completed, they will be transported to the site during the skylight time for direct installation and fixation. After testing and confirmation, monitoring work can be carried out.

[0033] Use open and closed sections to simulate, drill and prefabricate the monitoring section sensors and pipelines; cut the liquid pipe, ventilation pipe and four-core cable between the static level sensors slightly longer than the predetermined spacing on site and keep them ready for use. According to the specifications and relevant requirements, the spacing between the prefabricated section sensors shall not exceed 20m; after cutting, keep the ports clean and ready for use, and register the on-site positions in sequence according to the corresponding sensor numbers and arrange them for use; the prefabricated section reference point is the head end, and the last sensor is the tail end. Starting from the sensor at the tail end of the monitoring section, one end of the liquid and ventilation joints is closed with a cap, and the other end is connected to the liquid pipe and ventilation pipe respectively and tightened with a nut, and the four-core cable is connected (the cable colors correspond one to one), and the above operations are repeated to connect all the monitoring sensors of the monitoring section;

[0034] The reference point sensor is connected to the sensor at the head of the monitoring section by liquid and gas pipes and cables with a length of no less than 40 meters, so as to ensure that the reference point is installed outside the area affected by shield construction. The position of the reference point sensor is fixed, while the position of the sensor at the head of the monitoring section is not fixed. The other end of the reference point sensor is connected to the liquid and gas pipes and cables; the liquid and gas pipes are respectively connected to the water tank interfaces 50 cm above the ground, and the cable is connected to the corresponding interface of the acquisition box; antifreeze is poured into the water tank. After the antifreeze fills all the pipes and sensors, check each sensor and joint for leakage one by one. If leakage occurs, raise and reconnect it in time to ensure that there is no leakage at the joint. Observe for a period of time to ensure that the liquid level in the water tank always remains above the middle liquid level line. When it is too low, add antifreeze to the position above the water tank liquid level line in time, and immediately check for leakage points. Repeat the exclusion and repair until the leakage points are excluded. Then check each section of the water pipe for air bubbles one by one, introduce the air bubbles into the sensor, and open the pressure relief valve to remove the air bubbles.

[0035] Connect a section of cable to the battery and the acquisition box, pay attention not to connect the positive and negative poles wrongly, and turn on the power supply switch to power on the acquisition box and the sensors. Output the signals (A, B) of the acquisition box through the signal line and connect them to the 485 data interface of the computer. Log in to the monitoring platform system, set the project name, monitoring content, sensor number, matching position information and other section and sensor parameters, save the set content, and then check each sensor and the liquid pipe for air bubbles and leakage one by one again. After confirming that there is no error; log in to the acquisition system, check and confirm that all the parameter settings are correct, read the sensor data, and check and confirm again after continuous observation for about one hour. The monitoring data is normal.

[0036] After checking that there is no leakage and air bubbles in the sensor and liquid conduction, and the data acquisition is normal. Starting from the sensor at the tail end of the section, wrap the liquid and gas pipes and the four-core cable together with thermal insulation materials, and use aluminum foil fiberglass cloth tape to wind and fix the thermal insulation materials so that the thermal insulation materials tightly wrap the pipes and cables. Wrap each one by one in this way until the reference point sensor. During the wrapping process, keep the prefabricated monitoring section always in on-line measurement. After wrapping, turn off and remove the power supply battery, tie and straighten the power supply cable and put it into the acquisition box for reuse during on-site installation. Remove the water pipe from the water tank and always keep it higher than the water tank height to ensure that the liquid level in the pipe is at the pipe orifice position. Seal it with a head or fold the water pipe in half, and tie it with a strap to ensure no water leakage. There should be no air bubbles in the pipe, otherwise add more antifreeze to the pipe orifice. Finally, seal the exhaust pipe and the cable head. Ensure that the liquid level is flush with the pipe orifice during the sealing process. The liquid can be squeezed out during sealing, and no air bubbles can enter.

[0037] Fix the sensor to the transportation bracket starting from the tail end. Rotate the wire reel bracket until the reference point sensor. Confirm again that the measurement reading of the sensor is normal. Pause the measurement of the prefabricated section. The assembly of the entire section is completed and it enters the state of being prepared for transportation to the site for installation. Sensor transportation: After the prefabricated monitoring section is completed, wind the sensors from the tail end of the prefabricated section onto the transportation bracket. Each sensor is temporarily fixed with a magic self-adhesive tape. During the process of transporting the prefabricated section onto the bracket, handle it gently and keep the prefabricated section in a relaxed state to avoid pulling the assembled pipeline and sensors. The sensors of the prefabricated section are successively placed on the shelf up to the reference point sensor. Divide the bracket and the sensor section into three equal parts and fix them with magic self-adhesive tape for convenient transportation, so that the bracket and the prefabricated section are kept stable. Through the cooperation of multiple people, place the prefabricated section in a safe corner and wait to be transported to the site for installation. Transport it to the entrance of the railway construction passage with a medium-sized box truck, and multiple people cooperate to lift the prefabricated section and transport it to the installation location.

[0038] On-site sensor installation: After the sensors are transported to the site, multiple people cooperate to open the prefabricated sensor wire reel starting from the reference point, and walk and place the sensors along the layout section reference point until the last sensor at the tail end. During the disassembly process, handle it gently to avoid pulling the assembled pipeline and sensors.

[0039] The on-site installation is divided into two sensor installation groups, one acquisition equipment installation group, and one mobile (material transportation, reinforcement) group.

[0040] Each installation group is equipped with an impact drill respectively. Install the sensor steel plate bracket at the bottom of the platform on the side of the subgrade by drilling holes, 10 cm above the ballast at the site. One person in the installation group holds the "L" bracket of the sensor at the predetermined position, projects the fixing holes of the bracket onto the concrete wall on the side of the subgrade, and marks it clearly with a marker pen. The person holding the impact drill drills holes with a diameter of 6 mm and a depth of 5 cm at the marked hole positions. The third installer fixes the "L" bracket with expansion screws. Finally, the sensor installer fixes the sensor to the "L" bracket with special bolts.

[0041] Two installation groups move forward alternately until they reach the position of the reference point sensor. After the sensor installation is completed, the installation group is split into two groups of two people each. One group installs the bridge, and the other group checks and protects the materials. The installation group returns and starts from the first sensor at the end. One person drills holes and the other person fixes the bridge with expansion tubes at intervals no greater than 2m. Two material wrapping groups wrap each sensor with thermal insulation materials. The entire cross-section of the sensor should be wrapped with thermal insulation materials without any exposure. Starting from the sensor at the end and along the line to the reference point, place the pipes and cables into the bridge while wrapping. Fasten both ends of the cover plate and reinforce the middle with wire to prevent the cover plate from being scratched or pulled by other objects. Other personnel assist in fixing the bridge, checking the sensors, and wrapping the sensors with thermal insulation materials. Another group installs the acquisition equipment. Select a location that does not affect the safety of traffic and railway equipment according to the drawings to install the water tank support, acquisition box, battery, and solar panel;

[0042] After installation, connect the liquid pipe, gas pipe, and cable to the acquisition box correspondingly. When the liquid pipe is opened, it should always be higher than the water tank height. Check the height of the water pipe, cut off the excess or air part and connect it to the water tank. The liquid level in the water tank (greater than 70% of the tank body) is slightly higher than the middle position. Connect to the 485 port of the computer acquisition terminal through the data cable, log in to the monitoring system to set the acquisition interval, and start normal measurement after checking that the platform settings are correct. After observing for at least one week until it stabilizes, take the average of two measurements as the initial value. Check whether the internal page of the sensor is normal on-site. After confirming that there is no error, view the measurement data. After all the data is confirmed, arrange two groups to check each sensor again simultaneously to see if it is tightly sealed and whether the bridge cover plate is firmly fixed, etc., to ensure that all sensors and pipelines in the monitoring section are well protected.

[0043] Clean up the on-site tools and remaining materials and prepare to evacuate one after another. Check that the equipment readings are correct. Organize the main personnel to conduct a comprehensive inspection of all acquisition equipment, sensors, and lines to see if they are firmly fixed and fully wrapped. Ensure that the acquisition equipment is secure. The main person in charge leads a team to check and count the installation lines and the site again to make sure no tools (screws) are left behind. Personnel evacuate one after another. After all installations in the monitoring section are completed, continuously observe for one week. If there is no abnormality in the monitoring system, set the average of two readings as the initial value of the monitoring, and the on-site monitoring enters the normal state.

[0044] When applying the static level quickly within the railway scope during the reduced skylight period, through prefabrication in advance or ordering prefabricated parts, complete all work links except for on-site installation and fixation outside the railway protection area in advance. Repeatedly simulate and deduce to find out the error-prone points, calculate the time required for each node and corresponding measures, so as to reduce the installation time within the railway and the cooperation cost of the railway management department. At the same time, through prefabrication and assembly, pre-commissioning, and simulation and deduction, place the opportunity to make mistakes outside the railway protection area, and practice all possible problems in on-site installation one by one, which greatly improves the utilization efficiency of the on-site skylight time, reduces the on-site installation and commissioning time, and also reduces the possible on-site safety accidents due to the reduction of on-site installation and commissioning time.

[0045] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A rapid installation method of static level monitoring in existing railways or railway stations, characterized in that, It includes the following steps: S1. Design investigation: Before prefabrication, preferably conduct field investigation and design on the measuring point positions and line orientations of multiple monitoring sections on site, produce image data and design drawings, determine the installation positions, heights and specific line arrangements of the static level gauges, liquid storage tanks and data acquisition instruments, and make corresponding position marks; S2. Material preparation: Prepare the materials and tools necessary for the assembly and prefabrication of the monitoring section according to S1, and transport them to the vicinity of the corresponding positions. Insulation and collision protection measures are adopted for on-site instruments and pipelines; S3. Sensor prefabrication and assembly: Use an open and closed section to simulate, drill and prefabricate and assemble the sensors and pipelines of the monitoring section. Cut the static level sensors, liquid pipes, gas pipes and four-core cables for standby. Starting from the reference point of the prefabricated section as the head end and the last sensor as the tail end, starting from the sensor at the tail end of the monitoring section, seal one end of the liquid and gas connectors with a sealing head, and connect the other end to the liquid pipe and gas pipe respectively and tighten with nuts. Connect the four-core cable, and repeat the above operations to connect all the monitoring sensors of the monitoring section; S4. Sensor transportation: After step S3, wind the sensors from the tail end of the prefabricated section onto the transportation brackets and fix each sensor. During the process, the prefabricated section should be kept in a relaxed state to avoid pulling the assembled pipelines and sensors; S5. On-site sensor installation: Multiple people cooperate to open the prefabricated sensor wire reels starting from the reference point, walk and unwind along the reference point of the layout section until the last sensor at the tail end. During the process, avoid pulling the assembled pipelines and sensors. The on-site installation is divided into two sensor installation groups, one acquisition equipment installation group and one mobile group. The two installation groups move forward alternately until the sensor position of the reference point is installed. Check whether the internal page of the sensor is normal on site, confirm that there is no error and view the measurement data. After all the data is confirmed, arrange two groups to check each sensor again at the same time to see whether it is tightly sealed and whether the bridge cover plate is firmly fixed, so as to protect all the sensors and pipelines of the monitoring section tightly.

2. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 1, characterized in that, In step S3, the static level sensors, liquid pipes, gas pipes and four-core cables are slightly longer than the pre-determined spacing on site.

3. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 1, characterized in that, In step S3, the spacing between the prefabricated section sensors is not greater than 20m respectively.

4. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 1, characterized in that, In step S3, the reference point sensor is connected to the first sensor at the head end of the monitoring section with liquid and gas pipes and cables not less than 40 meters long to ensure that the reference point is installed outside the influence area of shield construction. The other end of the reference point sensor is connected to the liquid and gas pipes and cables; the liquid and gas pipes are respectively connected to the water tank interfaces 50cm above the ground, and the cable is connected to the corresponding interface of the acquisition box.

5. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 4, characterized in that, In the step S3, antifreeze is added into the water tank. After the antifreeze fills all the pipes and sensors, check each sensor and its joint for leakage one by one. If leakage occurs, raise it in time and reconnect it to ensure that there is no leakage at the joint. After standing for a period of time, observe whether the liquid level in the water tank always remains above the middle liquid level line. When it is too low, inject antifreeze into the water tank until it is above the liquid level line immediately, and then check for leakage points. Repeat the exclusion and repair until the leakage points are excluded. Then check each section of the water pipe for air bubbles one by one, and introduce the air bubbles into the sensors. Open the pressure relief valve to remove the air bubbles.

6. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 4, characterized in that, In the step S3, starting from the sensor at the end of the section, use thermal insulation materials to wrap the liquid pipe, air pipe and four-core cable together, and use aluminum foil fiberglass cloth tape to wind and fix the thermal insulation materials so that the thermal insulation materials tightly wrap the pipes and cables. Wrap them one by one in this way until the reference point sensor. During the wrapping process, keep the prefabricated monitoring section always under on-line measurement.

7. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 6, characterized in that, In the step S3, after wrapping is completed, turn off and remove the power supply battery, tie up and straighten the power supply cable and put it into the acquisition box for reuse during on-site installation. Remove the water pipe and always keep it higher than the water tank height to ensure that the liquid level in the pipe is at the pipe orifice position. Finally, seal the exhaust pipe and cable head.

8. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 1, characterized in that, In the step S4, the prefabricated section sensors are successively placed on the shelf up to the reference point sensor. Use magic self-adhesive tape to fix the bracket and the sensor section into three equal parts for convenient transportation to keep the bracket and the prefabricated section stable.

9. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 1, characterized in that, In the step S5, after checking the sensors, use thermal insulation materials to wrap the sensors.

10. The rapid installation method of static level monitoring in existing railways or railway stations according to claim 9, characterized in that, In the step S5, after installation, connect the liquid pipe, air pipe and cable to the acquisition box correspondingly. When the liquid pipe is opened, always keep it higher than the water tank height, and check the height of the water pipe. Cut off the redundant or air-containing part and connect it to the water tank. The liquid level in the water tank is slightly higher than the middle position, more than 70% of the box body.

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